Lenze 8400 protec, Hardware Manual

Page: 141 / 198

Commissioning
Preparing the commissioning procedure
8
141
EDS84DPS424 EN 5.0
Notes on commissioning in the case of an external 24 V supply
The following sequence must be observed when commissioning devices with an external
24 V supply:
ƒ
Switch−on
– Connection of the external 24 V supply
The control electronics and fieldbus communication are started and the display
shows the "LU" message (undervoltage in the DC bus)
– Connection of the 400 V mains voltage
The message in the display goes off / changes over to .
ƒ
Switch−off
– Switch−off of the 400 V mains voltage
– Switch−off of the 24 V supply
Note!
The functions of the control electronics become inactive when the 24 V supply
is switched off. The switch function of Ethernet−based fieldbuses is also
inactive.
Switching the 24 V supply when the mains voltage is applied may lead to an
error status in higher−level controls.
Notes for the commissioning of EMS versions
For EMS version devices, in addition the following has to be observed:
ƒ
Devices with a rocker switch control element
– To enable the controller, the rocker switch has to be operated.
– Operating the rocker switch again inhibits the controller.
ƒ
Device without a rocker switch control element
The controller has to be enabled using the available communication options.